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Here is the firing order and spark plug wire routing diagram for a 2006 Chevy Impala LT 3.9 V6:
Firing order: 1-2-3-4-5-6
Spark plug wire routing (starting from the driver's side):
Cylinder 1: connect to the coil tower closest to the driver's side headlight
Cylinder 3: connect to the coil tower next to cylinder 1
Cylinder 5: connect to the coil tower next to cylinder 3
Cylinder 2: connect to the coil tower closest to the passenger side headlight
Cylinder 4: connect to the coil tower next to cylinder 2
Cylinder 6: connect to the coil tower next to cylinder 4
Note: Make sure to route the wires properly to avoid cross-firing.
It depends on which engine is in the vehicle. The 2004 Sonata came with two possible powertrains -- the 2.4 Lit L4, and the 2.7 Lit V6.
On the 4 cylinder engine, there are two coil packs and two ignition wires, Below each coil pack is a spark plug (#2 and #4 cylinders). The wire from # 2 coil pack goes to #3 spark plug, and the wire from #4 coil pack goes to #1 spark plug.
Photo:
Now the 2.7 Lit V6 requires you remove the surge tank (intake manifold) in order to access the spark plugs & wires on Bank 1 (Right Hand side of the engine).
sounds like spark plug coil is bad. had the same problem on my truck also. check wich cylinder is misfiring and replace the coil and maybe the plug also. if the plug looks good leave it. autozone can give you a read out. when checking the coil, if it has a rust color to it its bad and needs to be replaced. 02 z28
Loud popping in the intake means that the unburnt gas exploding in intake.... Check cranks sensor and gear. Gear may dirty or even damage or BAD crank sensor the sensor provides reference for spark signal. So this may be your problem. Contact if you need more help. Thanks for using FIX YA
generally if it is a sensor you should be able to retrieve a fault code. Other things to chek, timing, vacuum leaks, EGR. valve, fuel filter, plugged injectors, spark plug ( gap ), lead wires, distributor cap, rotor.Hope that this will help you. Good luck and remember to rate all replies you get. Thanx.
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